Running... not a good idea

So I had said that I was going to try running after not being a active runner for many years.  Well today I realized that I had been making the right choice all along.    I got on the treadmill, (dreadful things) and stated off at a nice stroll slowly building up speed.  I was going along at a fine pace, moving my arms, breathing and all the good stuff thinking that this isn't so bad, when all the sudden it feels like my IT band is a rubber band.   I immediately got off the treadmill and stretched and walked around.  It has been a few hours and still I feel miserable.   Of course I had to try out my new adventure on a Friday night and a three day weekend! Classic.  Oh well lesson learned.  No more running for me!